PARAGON 2 - KM2209 - Underway CTD

These Simons Collaboration on Ocean Processes and Ecology (SCOPE) data products were produced by the University of Hawaiʻi at Mānoa with support from the Simons Foundation. This dataset was collected on the R/V Kilo Moana during the PARAGON 2 cruise which departed from and returned to Honolulu, HI. The cruise track was Lagrangian, following free-floating arrays deployed in a chlorophyll bloom feature. Underway CTD profiles were conducted with the ship moving less than 8 knots by dropping a probe over the stern. The data were binned to every 2 meters after calculating depth from pressure and latitude. A negative lag was applied to the temperature data to align it with the conductivity data and avoid spikes in salinity. Chlorophyll and fluorescence are intercalibrated with the shipboard CTD (scaled against Winkler oxygen and chloropigments). This intercalibration used a linear regression for the upper 200m in both cases, but for oxygen the intercept was forced to zero.本数据集为西蒙斯海洋过程与生态合作项目（Simons Collaboration on Ocean Processes and Ecology, 简称SCOPE）的数据产品，由夏威夷大学马诺阿分校制作，得到西蒙斯基金会的资助支持。本数据集采集自“基洛莫阿纳号”（R/V Kilo Moana）科考船执行的PARAGON 2航次，该航次从夏威夷州檀香山出发并返回。本次航次采用拉格朗日航迹，追踪部署在叶绿素藻华区域的自由漂浮阵列。通过在船尾下放探头的方式开展走航式温盐深（Conductivity, Temperature, Depth, 简称CTD）剖面测量，航行全程船速低于8节。在根据压力与纬度计算得到水深后，将所有数据按每2米的间隔进行分箱处理。对温度数据施加负滞后校正，以使其与电导率数据对齐，进而避免盐度数据出现异常尖峰。叶绿素与荧光数据已与船载CTD系统完成相互校准，校准时以温克勒法（Winkler）测定的溶解氧及叶绿素色素作为参照进行标校。上述校准过程在两类数据的表层200米范围内均采用线性回归方法，其中溶解氧数据的校准截距被强制设定为0。